Superconducting behavior of the solid solution, Y2Pd(1-x)Pt(x)Ge3

TL;DR

This study investigates how substituting Pd with Pt in Y2PdGe3 affects its superconducting transition temperature, revealing a monotonic increase in Tc with increasing Pt content, contrasting with previous non-monotonic behaviors.

Contribution

It provides new insights into the effect of element substitution on superconductivity in Y2PdGe3, demonstrating a unique monotonic Tc variation with Pt doping.

Findings

Tc increases monotonically with Pt content

Superconducting properties are significantly influenced by element substitution

Contrasts with non-monotonic behavior in similar compounds

Abstract

The compound Y2PdGe3 was earlier reported by us to be one of the very few ternary superconducting compounds (T_c= 3 K) belonging to the same structure as that of MgB2. Here we report the results of electrical resistivity, magnetization and heat capacity measurements at low temperatures on the solid solution with a nominal starting composition, Y2Pd(1-x)Pt(x)Ge3, to understand the influence of gradual replacement of Pd by Pt on T_c. The superconducting properties of this solution is distinctly interesting in the sense that the Tc varies monotonically with increasing x in sharp contrast to the non-monotonic variation for other isostructural solid solutions reported recently.